| Presentation | 2011-12-19 Concise representation of a matrix of basis functions for speech analysis and synthesis by using segmental NMF Cheol LEE, Kazunori MANO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have proposed an analysis-synthesis method by using non-negative matrix factorization in phoneme-wise speech segments (segmental NMF). In this paper, a concise representation of a matrix of basis functions of STRAIGHT spectral envelopes is proposed to reduce the number of dimensions of the NMF basis functions. Non-negative matrix factorization technique decomposes a matrix of STRAIGHT spectrum envelope sequences into a basis matrix and a weighting matrix, both of which have non-negative elements. The conventional STRAIGHT power spectrum has 513 dimensions, which requires large amount of memory spaces. According to our previous research, the obtained basis matrix for each segmental STRAIGHT spectrum has very sparse components, and it is expected that such a matrix can be represented by simple combinations of some Gaussian mixture distributions. Some preliminary results of the approximation of the basis functions are discussed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | speech segment / non-negative matrix factorization / STRAIGHT / Gaussian mixture distributions |
| Paper # | NLC2011-40,SP2011-85 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2011/12/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Natural Language Understanding and Models of Communication (NLC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Concise representation of a matrix of basis functions for speech analysis and synthesis by using segmental NMF |
| Sub Title (in English) | |
| Keyword(1) | speech segment |
| Keyword(2) | non-negative matrix factorization |
| Keyword(3) | STRAIGHT |
| Keyword(4) | Gaussian mixture distributions |
| 1st Author's Name | Cheol LEE |
| 1st Author's Affiliation | College of Systems Engineering and Science, Shibaura Institute of Technology() |
| 2nd Author's Name | Kazunori MANO |
| 2nd Author's Affiliation | College of Systems Engineering and Science, Shibaura Institute of Technology |
| Date | 2011-12-19 |
| Paper # | NLC2011-40,SP2011-85 |
| Volume (vol) | vol.111 |
| Number (no) | 364 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |